Data recorder design and performance tests for recording temperature, humidity, vibration and sound data in indoor environments

In this thesis, a monitoring system has been developed to improve the quality and efficiency of the lives of elderly individuals living alone at home. Data such as temperature, humidity, harmful/toxic gases, and motion are collected from the elderly individual's living environment. These data are processed in the microcontroller system and sent to an interface via wifi connections, allowing for monitoring. The authorized 'user,' who monitors these data through the interface, can observe violations of critical safety levels and take necessary precautions. The main goal is to reduce the elderly's dependence on others and ensure that they continue to live comfortably and safely. The monitoring system does not include a camera to respect the individual's privacy. In the designed system, alert mechanisms are in place to warn the elderly in case of critical values, besides the user's intervention. A voice alert system is activated upon detection of the presence of toxic gases. Additionally, if temperature or humidity values fall below or exceed predefined threshold values, a warning message appears on the LCD screen, prompting the individual to take appropriate precautions. Moreover, a red LED is used to indicate whether the elderly individual is motion or not. Arduino UNO is used as a microcontroller in this project. The data is tracked via the ThingSpeak platform, which is generated with Internet of Things (IoT) technology and provides practical use. Data can be monitored with graphs formed in the ThingSpeak interface. The ESP8266-01 wifi module facilitates the connection to the internet for transmitting the data from Arduino. The designed system is placed in the kitchen, living room, and toilet/bathroom of the elderly for data collection and monitoring. The user can determine the individual's location and the duration spent in that location. One of the objectives of this project is to contribute to the development of remote monitoring systems. This project can be further improved to track different types of data or to make user monitoring more user-friendly and pave the way to a complete remote monitoring system.